S04.40
Injury of abducent nerve, unspecified side
Clinical Classification Guidelines
Medical Intelligence & Overview
An injury of the abducent nerve, known medically as cranial nerve VI, affects a nerve responsible for controlling the lateral rectus muscle of the eye. This nerve enables lateral movement of the eye, allowing you to look outward. When injured, individuals may experience difficulties in moving the affected eye laterally, which can lead to visual challenges. The ICD-10 code S04.40 pertains to injuries of this nerve on an unspecified side, indicating that the specific side of the injury has not been detailed.
Causes & Symptoms
Clinical Causes: Traumatic injuries resulting from accidents, falls, or blunt force to the head. Penetrating wounds or lacerations near the nerve's pathway. Increased intracranial pressure due to brain hemorrhages or tumors. Inflammatory conditions such as meningitis or encephalitis. Compressive lesions like tumors or aneurysms pressing on the nerve. Complications from sinus or skull base surgeries. Vascular anomalies affecting blood supply to the nerve.
Key Symptoms: Dilated pupil on the affected side. Weakness or paralysis of eye abduction, leading to limited outward movement. Double vision (diplopia), especially when looking toward the affected side. Eye that appears to turn inward when attempting to look outward. In some cases, loss of sensation or other neurological deficits depending on injury severity.
Diagnostic & Treatment
Diagnosis Path: Diagnosis involves a comprehensive neurological and ophthalmologic examination. Healthcare professionals may utilize tests such as:
Treatment Protocols: Management of abducent nerve injury depends on the severity and underlying cause. Typical approaches include:
Clinical Advice & FAQs
Billing Guidance
Is S04.40 a billable ICD-10 code?
Yes, S04.40 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report S04.40?
Clinical documentation must specify the nature of Injury of abducent nerve, unspecified side and any associated comorbidities for accurate reporting.
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